Electro-optical device and electronic apparatus

ABSTRACT

An electro-optical device is provided and includes a first light-emitting element configured to emit light in a first wavelength region, a second light-emitting element configured to emit light in a second wavelength region shorter than the first wavelength region, a third light-emitting element configured to emit light in a third wavelength region shorter than the second wavelength region, a first filter configured to transmit light in the first wavelength region and light in the second wavelength region and absorb light in the third wavelength region, and a second filter configured to transmit light in the first wavelength region and light in the third wavelength region and absorb light in the second wavelength region.

The present application is based on, and claims priority from JPApplication Serial Number 2020-083831, filed May 12, 2020, thedisclosure of which is hereby incorporated by reference herein in itsentirety.

BACKGROUND 1. Technical Field

The present disclosure relates to an electro-optical device and anelectronic apparatus.

2. Related Art

Electro-optical devices including a light-emitting element such as anorganic electroluminescent (EL) element are known. This type of deviceincludes, for example, a color filter configured to transmit, of lightfrom the light-emitting element, light of a predetermined wavelengthregion, as disclosed in JP-A-2019-117941.

JP-A-2019-117941 includes a plurality of sub-pixels including alight-emitting element, and a plurality of color filters correspondingto each of the sub-pixels. Specifically, a red color filter is disposedoverlapping a light-emitting element capable of emitting red light, agreen color filter is disposed overlapping a light-emitting elementcapable of emitting green light, and a blue color filter is disposedoverlapping a light-emitting element capable of emitting blue light.

In the device described in JP-A-2019-117941, a color filtercorresponding to light in the wavelength region emitted from thelight-emitting element is arranged for each sub-pixel. Therefore, inthis device, when a width of the sub-pixels decreases or a density ofthe sub-pixels increases, there is a possibility that visual field anglecharacteristics will deteriorate.

SUMMARY

According to an aspect of the present disclosure, an electro-opticaldevice includes a first light-emitting element configured to emit lightin a first wavelength region, a second light-emitting element configuredto emit light in a second wavelength region shorter than the firstwavelength region, a third light-emitting element configured to emitlight in a third wavelength region shorter than the second wavelengthregion, a first filter configured to transmit light in the firstwavelength region and light in the second wavelength region and absorblight in the third wavelength region, and a second filter configured totransmit light in the first wavelength region and light in the thirdwavelength region and absorb light in the second wavelength region.

According to an aspect of the present disclosure, an electronicapparatus includes the above-described electro-optical device and acontrol unit configured to control operation of the electro-opticaldevice.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view schematically illustrating an electro-opticaldevice according to a first exemplary embodiment.

FIG. 2 is an equivalent circuit diagram of a sub-pixel illustrated inFIG. 1.

FIG. 3 is a diagram illustrating a cross section taken along line A1-A1illustrated in FIG. 1.

FIG. 4 is a diagram illustrating a cross section taken along line A2-A2illustrated in FIG. 1.

FIG. 5 is a schematic plan view illustrating a portion of alight-emitting element layer in the first exemplary embodiment.

FIG. 6 is a schematic plan view illustrating a portion of a color filterin the first exemplary embodiment.

FIG. 7 is a schematic plan view illustrating an arrangement of thelight-emitting element layer and the color filter in a first exemplaryembodiment.

FIG. 8 is a diagram for explaining characteristics of a yellow filter.

FIG. 9 is a diagram for explaining characteristics of a magenta filter.

FIG. 10 is a diagram for explaining characteristics of the color filter.

FIG. 11 is a schematic view illustrating an electro-optical deviceincluding a color filter in the related art.

FIG. 12 is a schematic view illustrating an example of a case in whichthe electro-optical device of FIG. 11 is reduced in size.

FIG. 13 is a schematic view illustrating the electro-optical device ofthe first exemplary embodiment.

FIG. 14 is a schematic plan view illustrating a portion of a colorfilter in a second exemplary embodiment.

FIG. 15 is a schematic plan view illustrating an arrangement of alight-emitting element layer and the color filter in the secondexemplary embodiment.

FIG. 16 is a schematic plan view illustrating a portion of a colorfilter in a third exemplary embodiment.

FIG. 17 is a schematic plan view illustrating an arrangement of thelight-emitting element layer and the color filter in the third exemplaryembodiment.

FIG. 18 is a schematic plan view illustrating a portion of alight-emitting element layer of a fourth exemplary embodiment.

FIG. 19 is a schematic plan view illustrating an arrangement of thelight-emitting element layer and the color filter in the fourthexemplary embodiment.

FIG. 20 is a plan view schematically illustrating a portion of a virtualdisplay device as an example of an electronic apparatus.

FIG. 21 is a perspective view illustrating a personal computer as anexample of the electronic apparatus.

DESCRIPTION OFF EXEMPLARY EMBODIMENTS

Preferred embodiments of the present disclosure will be described belowwith reference to the accompanying drawings. Note that, in the drawings,dimensions and scales of sections are differed from actual dimensionsand scales as appropriate, and some of the sections are schematicallyillustrated to make them easily recognizable. Further, the scope of thepresent disclosure is not limited to these embodiments unless otherwisestated to limit the present disclosure in the following descriptions.

1. Electro-Optical Device 100 1. First Exemplary Embodiment 1A-1.Configuration of Electro-Optical Device 100

FIG. 1 is a plan view schematically illustrating an electro-opticaldevice 100 according to a first exemplary embodiment. Note that, forconvenience of explanation, hereinafter description will be madeappropriately using an X-axis, a Y-axis, and a Z-axis orthogonal to eachother. Further, one direction along the X-axis is referred to as an X1direction, and a direction opposite the X1 direction is referred to asan X2 direction. Similarly, one direction along the Y-axis is referredto as a Y1 direction, and a direction opposite the Y1 direction isreferred to as a Y2 direction. One direction along the Z-axis isreferred to as a Z1 direction, and a direction opposite the Z1 directionis referred to as a Z2 direction. A plane containing the X-axis and theY-axis is referred to as an X-Y plane. Further, a view in the Z1direction or the Z2 direction is referred to as “plan view”.

The electro-optical device 100 illustrated in FIG. 1 is an example of adevice that utilizes an organic electroluminescent (EL) device todisplay a full color image. Note that the image includes an imagedisplaying character information only. The electro-optical device 100serves as a micro display suitably used in a head-mounted display, forexample.

The electro-optical device 100 includes a display area A10 in which animage is displayed, and a peripheral area A20 surrounding a periphery ofthe display area A10 in plan view. In the example illustrated in FIG. 1,a shape of the display area A10 in plan view is quadrangular, but theshape is not limited thereto, and may be another shape.

The display area A10 includes a plurality of pixels P. Each of thepixels P is the smallest unit in the display of an image. In thisexemplary embodiment, the plurality of pixels P are disposed in rows andcolumns in the X1 direction and the Y2 direction. Each of the pixels Pincludes a sub-pixel PG from which light in a green wavelength region isobtained, a sub-pixel PB from which light in a blue wavelength region isobtained, and two sub-pixels PR from which light in a red wavelengthregion is obtained. One pixel P of the color image is constituted by onesub-pixel PB, one sub-pixel PG, and one sub-pixel PR. Note that, in thebelow, when the sub-pixel PB, the sub-pixel PG, and the sub-pixel PR arenot differentiated, they are expressed as a sub-pixel P0.

The sub-pixel P0 is an element constituting the pixel P. The sub-pixelP0 is the smallest unit independently controlled. The sub-pixel P0 iscontrolled independently from the other sub-pixels P0. A plurality ofthe sub-pixels P0 are disposed in rows and columns in the X1 directionand the Y2 direction. Further, in this exemplary embodiment, an array ofthe sub-pixels P0 is a Bayer array. The Bayer array in this exemplaryembodiment is an array in which one sub-pixel PG, one sub-pixel PB, andtwo sub-pixels PR form one pixel P. In the Bayer array, the twosub-pixels PR are disposed diagonally with respect to an array directionof the pixels P.

Here, the red wavelength region corresponds to a “first wavelengthregion”, the green wavelength region corresponds to a “second wavelengthregion”, and the blue wavelength region corresponds to a “thirdwavelength region”. Note that the “first wavelength region”, the “secondwavelength region”, and the “third wavelength region” are wavelengthregions that differ from each other. The blue wavelength region is awavelength region shorter than the green wavelength region, and thegreen wavelength region is a wavelength region shorter than the redwavelength region.

Further, the electro-optical device 100 includes an element substrate 1and a light-transmitting substrate 7 having optical transparency. Theelectro-optical device 100 has a so-called top-emission structure, andemits light from the light-transmitting substrate 7. Note that thedirection in which the element substrate 1 and the light-transmittingsubstrate 7 overlap coincides with the Z1 direction or the Z2 direction.Further, “optical transparency” refers to transparency with respect tovisible light, and preferably a transmittance of visible light isgreater than or equal to 50%.

The element substrate 1 includes a data line drive circuit 101, ascanning line drive circuit 102, a control circuit 103, and a pluralityof external terminals 104. The data line drive circuit 101, the scanningline drive circuit 102, the control circuit 103, and the plurality ofexternal terminals 104 are disposed in the peripheral area A20. The dataline drive circuit 101 and the scanning line drive circuit 102 areperipheral circuits configured to control the driving of each componentconstituting the plurality of sub-pixels P0. The control circuit 103 isconfigured to control display of an image. Image data are supplied tothe control circuit 103 from an upper circuit (not illustrated). Thecontrol circuit 103 is configured to supply various signals based on theimage data to the data line drive circuit 101 and the scanning linedrive circuit 102. Although not illustrated, a flexible printed circuit(FPC) board or the like for electrical coupling with the upper circuitis coupled to the external terminals 104. Further, the display element 1is electrically coupled to a power supply circuit (not illustrated).

The light-transmitting substrate 7 is a cover configured to protect alight-emitting element 20 and a color filter 5, described later, of theelement substrate 1. The light-transmitting substrate 7 is formed of,for example, a glass substrate or a quartz substrate.

FIG. 2 is an equivalent circuit diagram of the sub-pixel P0 illustratedin FIG. 1. The element substrate 1 is provided with a plurality ofscanning lines 13, a plurality of data lines 14, a plurality of powersupplying lines 15, and a plurality of power supplying lines 16. In FIG.2, one sub-pixel P0 and a corresponding element are representativelyillustrated.

The scanning line 13 extends in the X1 direction and the data line 14extends in the Y2 direction. Note that, although not illustrated, theplurality of scanning lines 13 and the plurality of data lines 14 arearrayed in a lattice shape. Further, the scanning line 13 is coupled tothe scanning line drive circuit 102 illustrated in FIG. 1, and the dataline 14 is coupled to the data line drive circuit 101 illustrated inFIG. 1.

As illustrated in FIG. 2, the sub-pixel P0 is provided with thelight-emitting element 20 and a pixel circuit 30 configured to controldriving of the light-emitting element 20. The light-emitting element 20is constituted by an organic light-emitting diode (OLED). Thelight-emitting element 20 includes a pixel electrode 23, a commonelectrode 25, and an organic layer 24.

The power supplying line 15 is electrically coupled to the pixelelectrode 23 via the pixel circuit 30. On the other hand, the powersupplying line 16 is electrically coupled to the common electrode 25.Here, a power supply potential Vel on a high potential side is suppliedfrom the power supply circuit (not illustrated) to the power supplyingline 15. A power supply potential Vct on a low potential side issupplied from the power supply circuit (not illustrated) to the powersupplying line 16. The pixel electrode 23 functions as an anode, and thecommon electrode 25 functions as a cathode. In the light-emittingelement 20, holes supplied from the pixel electrode 23 and electronssupplied from the common electrode 25 are recombined in the organiclayer 24, and the organic layer 24 produces light. Note that the pixelelectrode 23 is provided to each sub-pixel P0, and the pixel electrode23 is controlled independently from the other pixel electrodes 23.

The pixel circuit 30 includes a switching transistor 31, a drivingtransistor 32, and a retention capacitor 33. A gate of the switchingtransistor 31 is electrically coupled to the scanning line 13. Further,one of a source and a drain of the switching transistor 31 iselectrically coupled to the data line 14, and the other is electricallycoupled to a gate of the driving transistor 32. Further, one of a sourceand a drain of the driving transistor 32 is electrically coupled to thepower supplying line 15, and the other is electrically coupled to thepixel electrode 23. Further, one of electrodes of the retentioncapacitor 33 is coupled to the gate of the driving transistor 32, andthe other electrode is coupled to the power supplying line 15.

In the pixel circuit 1 described above, when the scanning line 13 isselected by activating a scanning signal by the scanning line drivecircuit 102, the switching transistor 31 provided in the selectedsub-pixel P0 is turned on. Then, a data signal is supplied from the dataline 14 to the driving transistor 32 corresponding to the selectedscanning line 13. The driving transistor 32 supplies a currentcorresponding to a potential of the supplied data signal, that is, acurrent corresponding to a potential difference between the gate and thesource, to the light-emitting element 20. Then, the light-emittingelement 20 emits light at a luminance corresponding to a magnitude ofthe current supplied from the driving transistor 32. Further, when thescanning line drive circuit 102 releases the selection of the scanningline 13 and the switching transistor 31 is turned off, the potential ofthe gate of the driving transistor 32 is held by the retention capacitor33. Therefore, the light-emitting element 20 can maintain emission ofthe light of the light-emitting element 20 even after the switchingtransistor 31 is turned off.

Note that the configuration of the pixel circuit 30 described above isnot limited to the illustrated configuration. For example, the pixelcircuit 30 may further include a transistor that controls the conductionbetween the pixel electrode 23 and the driving transistor 32.

1A-2. Element Substrate 1

FIG. 3 is a diagram illustrating a cross section taken along line A1-A1illustrated in FIG. 1. FIG. 4 is a diagram illustrating a cross sectiontaken along line A2-A2 illustrated in FIG. 1. In the followingdescription, the Z1 direction is upward and the Z2 direction isdownward. In the following, “B” is added to the end of a reference signof an element related to the sub-pixel PB, “G” is added to the end of areference sign of an element related to the sub-pixel PG, and “R” isadded to the end of a reference sign of an element related to thesub-pixel PR. Note that when no distinction is made for each emissioncolor, the “B”, “G”, and “R” at the end of the reference signs areomitted.

As illustrated in FIG. 3 and FIG. 4, the element substrate 1 includes asubstrate 10, a reflection layer 21, a light-emitting element layer 2, aprotective layer 4, and the color filter 5. Note that thelight-transmitting substrate 7 described above is bonded to the elementsubstrate 1 by an adhesive layer 70.

Although not illustrated in detail, the substrate 10 is a wiringsubstrate on which the pixel circuit 30 described above is formed on asilicon substrate, for example. Note that, instead of a siliconsubstrate, a glass substrate, a resin substrate, or a ceramic substrate,for example, may be used. Moreover, while not illustrated in detail,each of the aforementioned transistors included in the pixel circuit 30may be a metal oxide semiconductor (MOS) transistor, a thin filmtransistor, or a field effect transistor. When the transistor includedin the pixel circuit 30 is a MOS transistor including an active layer,the active layer may be constituted by a silicon substrate. Further,examples of a material for each element and each type of wiring includedin the pixel circuit 30 include polysilicon, metal, metal silicide, anda metallic compound.

The reflection layer 21 is disposed on the substrate 10. The reflectionlayer 21 includes a plurality of reflection sections 210 having lightreflectivity. Further, “light reflectivity” refers to reflectivity withrespect to visible light, and preferably means that a reflectance ofvisible light is greater than or equal to 50%. Each reflection section210 reflects light generated in the organic layer 24. Note that,although not illustrated, the plurality of reflection sections 210 aredisposed in rows and columns corresponding to the plurality ofsub-pixels P0. Examples of a material of the reflection layer 21 includemetals such as aluminum (Al) and silver (Ag), or alloys of these metals.Note that the reflection layer 21 may function as a wiring electricallycoupled to the pixel circuit 30. Further, the reflection layer 21 may beconsidered as a portion of the light-emitting element layer 2.

The light-emitting element layer 2 is disposed on the reflection layer21. The light-emitting element layer 2 is a layer in which a pluralityof the light-emitting elements 20 are provided. The light-emittingelement layer 2 includes an insulating layer 22, an element separationlayer 220, a plurality of the pixel electrodes 23, the organic layer 24,and the common electrode 25. The insulating layer 22, the elementseparation layer 220, the organic layer 24, and the common electrode 25are common to the plurality of light-emitting elements 20.

The insulating layer 22 is a distance adjustment layer that adjusts anoptical distance L0 being an optical distance between the reflectionlayer 21 and the common electrode 25 described later. The insulatinglayer 22 is constituted by a plurality of films having insulatingproperties. Specifically, the insulating layer 22 includes a firstinsulating film 221, a second insulating film 222, and a thirdinsulating film 223. The first insulating film 221 covers the reflectionlayer 21. The first insulating film 221 is commonly formed in pixelelectrodes 23B, 23G, 23R. The second insulating film 222 is disposed onthe first insulating film 221. The second insulating film 222 overlapsthe pixel electrodes 23R, 23G in plan view, and does not overlap thepixel electrode 23B in plan view. The third insulating film 223 isdisposed on the second insulating film 222. The third insulating film223 overlaps the pixel electrode 23R in plan view, and does not overlapthe pixel electrodes 23B, 23G in plan view.

The element separation layer 220 including a plurality of openings isdisposed on the insulating layer 22. The element separation layer 220covers each outer edge of the plurality of pixel electrodes 23. Aplurality of light-emitting regions A are defined by the plurality ofopenings included in the element separation layer 220. Specifically, alight-emitting region AR included in a light-emitting element 20R, alight-emitting region AG included in a light-emitting element 20G, and alight-emitting region AB included in a light-emitting element 20B aredefined.

Examples of materials of the insulating layer 22 and the elementseparation layer 220 include silicon-based inorganic materials such assilicon oxide and silicon nitride. Note that, in the insulating layer 22illustrated in FIG. 3, the third insulating film 223 is disposed on thesecond insulating film 222, but the second insulating film 222 may bedisposed on the third insulating film 223, for example.

The plurality of pixel electrodes 23 are disposed on the insulatinglayer 27. The plurality of pixel electrodes 23 are provided in aone-to-one manner with the plurality of sub-pixels P0. Although notillustrated, each pixel electrode 23 overlaps the correspondingreflection section 210 in plan view. Each pixel electrode 23 has opticaltransparency and electrical conductivity. Further, examples of thematerial of the pixel electrode 23 include a transparent conductivematerial such as indium tin oxide (ITO) or indium zinc oxide (IZO). Theplurality of pixel electrodes 23 are electrically isolated from eachother by the element separation layer 220.

The organic layer 24 is disposed on the plurality of pixel electrodes23. The organic layer 24 includes a light-emitting layer including anorganic light-emitting material. The organic light-emitting material isan organic compound having luminosity. Further, in addition to thelight-emitting layer, the organic layer 24 includes, for example, a holeinjection layer, a hole transport layer, an electron transport layer,and an electron injection layer. The organic layer 24 includes alight-emitting layer from which light emission colors of blue, green,and red are obtained to realize white light emission. Note that theconfiguration of the organic layer 24 is not particularly limited to theconfiguration described above, and a known configuration can be applied.

On the organic layer 24, the common electrode 25 is disposed. The commonelectrode 25 is disposed on the organic layer 24. The common electrode25 has light reflectivity, optical transparency, and electricalconductivity. The common electrode 25 is formed of an alloy includingAg, such as MgAg, for example.

In the light-emitting element layer 2 described above, thelight-emitting element 20R includes the first insulating film 221, thesecond insulating film 222, the third insulating film 223, the elementseparation layer 220, the pixel electrode 23R, the organic layer 24, andthe common electrode 25. The light-emitting element 20G includes thefirst insulating film 221, the second insulating film 222, the elementseparation layer 220, the pixel electrode 23G, the organic layer 24, andthe common electrode 25. The light-emitting element 20B includes thefirst insulating film 221, the element separation layer 220, the pixelelectrode 23B, the organic layer 24, and the common electrode 25. Notethat each of the light-emitting elements 20 may be considered asincluding the reflection section 210.

Here, the optical distance L0 between the reflection layer 21 and thecommon electrode 25 is different for each sub-pixel P0. Specifically,the optical distance L0 in the sub-pixel PR is set in correspondencewith the red wavelength region. The optical distance L0 in the sub-pixelPG is set in correspondence with the green wavelength region. Theoptical distance L0 in the sub-pixel PB is set in correspondence withthe blue wavelength region.

Therefore, each light-emitting element 20 has an optical resonancestructure 29 that resonates light of a predetermined wavelength regionbetween the reflection layer 21 and the common electrode 25. Thelight-emitting elements 20R, 20G, 20B have optical resonance structures29 that differ from one another. The optical resonance structure 29reflects the light generated in the light-emitting layer of the organiclayer 24 by multiple reflection between the reflection layer 21 and thecommon electrode 25, and selectively intensifies light in apredetermined wavelength region. The light-emitting element 20R has anoptical resonance structure 29R that intensifies light in the redwavelength region between the reflection layer 21 and the commonelectrode 25. The light-emitting element 20G has an optical resonancestructure 29G that intensifies light in the green wavelength regionbetween the reflection layer 21 and the common electrode 25. Thelight-emitting element 20B has an optical resonance structure 29B thatintensifies light in the blue wavelength region between the reflectionlayer 21 and the common electrode 25.

A resonance wavelength at the optical resonance structure 29 isdetermined by the optical distance L0. Given λ0 as the resonancewavelength, a relationship [1] such as below holds true. Note that Φ(radian) in the relationship [1] represents the sum of the phase shiftsthat occur during transmission and reflection between the reflectionlayer 21 and the common electrode 25.

{(2×L0)/Δ0+Φ}/(2π)=m0 (where m0 is an integer)  [1]

The optical distance L0 is set such that a peak wavelength of light in awavelength region to be extracted is Δ0. By this setting, light in thepredetermined wavelength region to be extracted is enhanced, and thelight can be increased in intensity and a spectrum of the light can benarrowed.

In this exemplary embodiment, as described above, the optical distanceL0 is adjusted by varying a thickness of the insulating layer 22 foreach of the sub-pixels PB, PG, PR. Note that the method for adjustingthe optical distance L0 is not limited to a method of adjusting thethickness of the insulating layer 22. For example, the optical distanceL0 may be adjusted by varying a thickness of the pixel electrode 23 foreach of the sub-pixels PB, PG, PR.

The protective layer 4 is disposed on the plurality of light-emittingelements 20. The protective layer 4 protects the plurality oflight-emitting elements 20. Specifically, the protective layer 4 sealsthe plurality of light-emitting elements 20 to protect the plurality oflight-emitting elements 20 from the outside. The protective layer 4 hasgas barrier properties, and protects each light-emitting element 20 fromexternal moisture and oxygen, for example. With the protective layer 4thus provided, deterioration of the light-emitting element 20 can besuppressed compared to a case in which the protective layer 4 is notprovided. Therefore, reliability of the quality of the electro-opticaldevice 100 can be increased. Note that, because the electro-opticaldevice 100 is a top-emission type, the protective layer 4 has opticaltransparency.

The protective layer 4 includes a first layer 41, a second layer 42, anda third layer 43. The first layer 41, the second layer 42, and the thirdlayer 43 are layered in this order in a direction away from thelight-emitting element layer 2. The first layer 41, the second layer 42,and the third layer 43 have insulating properties. A material of thefirst layer 41 and the third layer 43 is, for example, an inorganiccompound such as silicon oxynitride (SiON). The second layer 42 is alayer for providing a flat surface to the third layer 43. A material ofthe second layer 42 is, for example, a resin such as an epoxy resin oran inorganic compound.

The color filter layer 5 selectively transmits light in a predeterminedwavelength region. The predetermined wavelength region includes the peakwavelength λ0 determined by the optical distance L0 described above.With use of the color filter 5, a color purity of the light emitted fromeach sub-pixel P0 can be increased compared to a case in which the colorfilter 5 is not used. The color filter 5 is formed from a resin materialsuch as an acrylic photosensitive resin material containing a colormaterial, for example. The color material is a pigment or a dye. Thecolor filter 5 is formed using, for example, a spin coating method, aprinting method, or an ink-jet method.

The light-transmitting substrate 7 is bonded onto the element substrate1 via the adhesive layer 70. The adhesive layer 70 is a transparentadhesive that uses a resin material such as epoxy resin and an acrylicresin, for example.

FIG. 5 is a schematic plan view illustrating a portion of thelight-emitting element layer 2 of the first exemplary embodiment.Hereinafter, for convenience of explanation, description will be madeappropriately using an α-axis intersecting the X-axis and the Y-axis inthe X-Y plane and a β-axis intersecting the X-axis and the Y-axis in theX-Y plane. The X-axis, the Y-axis, and the Z-axis are mutuallyorthogonal. The α-axis is inclined 45° with respect to each of theX-axis and the Y-axis. The β-axis is inclined 45° with respect to eachof the X-axis and the Y-axis. Further, one direction along the α-axis isreferred to as an α1 direction, and a direction opposite the α1direction is referred to as an α2 direction. One direction along theβ-axis is referred to as a β1 direction, and a direction opposite the β1direction is referred to as a β2 direction.

As illustrated in FIG. 5, the light-emitting element layer 2 includesone light-emitting element 20G, one light-emitting element 20B, and twolight-emitting elements 20R for each pixel P. The light-emitting element20G corresponds to a “second light-emitting element”, and thelight-emitting element 20B corresponds to a “third light-emittingelement”. In this exemplary embodiment, one of the two light-emittingelements 20R provided in each pixel P corresponds to a “firstlight-emitting element” and the other corresponds to a “fourthlight-emitting element”.

The light-emitting element 20R includes the light-emitting region ARthat emits light in a wavelength region including a red wavelengthregion. The red wavelength region is greater than 580 nm and less thanor equal to 700 nm. The light-emitting element 20G includes thelight-emitting region AG that emits light in a wavelength regionincluding a green wavelength region. The green wavelength region isgreater than or equal to 500 nm and less than or equal to 580 nm. Thelight-emitting element 20B includes a light-emitting region AB thatemits light in a wavelength region including a blue wavelength region.The blue wavelength region is specifically greater than or equal to 400nm and less than 500 nm.

Further, the light-emitting region AG corresponds to a “secondlight-emitting region”, and the light-emitting region AB corresponds toa “third light-emitting region”. The light-emitting region AR of thelight-emitting element 20R corresponding to the “first light-emittingelement” corresponds to “a first light-emitting region”, and thelight-emitting region AR of the light-emitting element 20R correspondingto the “fourth light-emitting element” corresponds to a “fourthlight-emitting region”.

As previously mentioned, the array of the sub-pixels P0 is a Bayerarray. Therefore, an array of the light-emitting regions A is a Bayerarray. Thus, one light-emitting region AG, one light-emitting region AB,and two light-emitting regions AR constitute one set, and the twolight-emitting regions AR are disposed diagonally with respect to thearray direction of the pixels P. In the Bayer array, the light-emittingelements 20 are disposed in two rows and two columns in one pixel P.

Specifically, in each of the pixels P, the two light-emitting regions ARare disposed side by side in the al direction. One light-emitting regionAR of the two light-emitting regions AR is disposed in the X1 directionwith respect to the light-emitting region AG, and the otherlight-emitting region AR is disposed in the Y2 direction with respect tothe light-emitting region AG. In each of the pixels P, thelight-emitting region AB is disposed in the β2 direction with respect tothe light-emitting region AG. Further, for example, when focus is placedon the pixel P located at the center in FIG. 5, the light-emittingregion AG existing in the pixel P is surrounded by four light-emittingregions AB and four light-emitting regions AR. Similarly, thelight-emitting region AB existing in the pixel P is surrounded by fourlight-emitting regions AG and four light-emitting regions AR.

Note that, in the illustrated example, a shape of the light-emittingregion A in plan view is substantially quadrangular, but is not limitedthereto, and may be, for example, hexagonal. Shapes of thelight-emitting regions AR, AG, AB in plan view are identical to oneanother, but may be different from one another. Areas of thelight-emitting regions AR, AG, AB in plan view are equal to one another,but may be different from one another.

FIG. 6 is a schematic plan view illustrating a portion of the colorfilter 5 of the first exemplary embodiment. As illustrated in FIG. 6,the color filter 5 includes two types of filters. Specifically, thecolor filter 5 includes a plurality of yellow filters 50Y and aplurality of magenta filters 50M. The plurality of yellow filters 50Yand the plurality of magenta filters 50M are mutually located on thesame plane. The yellow filter 50Y is a colored layer of yellow. Themagenta filter 50M is a colored layer of magenta. Further, the yellowfilter 50Y corresponds to a “first filter”, and the magenta filter 50Mcorresponds to a “second filter”.

The plurality of yellow filters 50Y are disposed in a staggered mannerin plan view. The plurality of magenta filters 50M are disposed in astaggered manner in plan view. The plurality of yellow filters 50Y andthe plurality of magenta filters 50M are alternately arranged in rowsand columns in the al direction and the β2 direction. A boundary betweenthe yellow filter 50Y and the magenta filter 50M adjacent to each otherextends in the α1 direction or the β2 direction. Put another way, eachside of an outer shape of each filter extends in the al direction or theβ2 direction.

A shape of the yellow filter 50Y and the magenta filter 50M in plan viewillustrated in FIG. 6 corresponds to the shape of the light-emittingregion A in plan view illustrated in FIG. 5. In the illustrated example,the shape of each of the plurality of yellow filters 50Y and theplurality of magenta filters 50M in plan view is substantiallyquadrangular. Note that the shape of each of the yellow filter 50Y andthe magenta filter 50M in plan view may be hexagonal, for example.Further, the shapes of the yellow filter 50Y and the magenta filter 50Mare identical to each other, but may be different from each other.

Further, an area of each of the yellow filter 50Y and the magenta filter50M in plan view illustrated in FIG. 6 is larger than the area of thelight-emitting region A in plan view illustrated in FIG. 5. Note thatthe areas of the yellow filter 50Y and the magenta filter 50M in planview are equal to each other, but may be different from each other.

FIG. 7 is a schematic plan view illustrating an arrangement of thelight-emitting element layer 2 and the color filter 5 in the firstexemplary embodiment. As illustrated in FIG. 7, the color filter 5overlaps the light-emitting element layer 2 in plan view. An arraydirection of the yellow filter 50Y and the magenta filter 50M intersectsan array direction of the plurality of light-emitting regions A in planview. As described above, the yellow filter 50Y and the magenta filter50M are alternately disposed in rows and columns in the al direction andthe β2 direction. On the other hand, the plurality of light-emittingregions A are arranged in rows and columns in the X1 direction and theY2 direction.

The plurality of yellow filters 50Y are disposed in a one-to-one mannerwith the plurality of light-emitting regions AG. Each yellow filter 50Yis disposed in the X-Y plane in a state of being rotated by 45° withrespect to the corresponding light-emitting region AG. Put another way,each yellow filter 50Y has a rectangular shape with an outer sidedisposed diagonally with respect to the X1 direction or the Y2direction. Each light-emitting region AG overlaps the correspondingyellow filter 50Y in plan view.

Similarly, the plurality of the magenta filters 50M are disposed in aone-to-one manner with the plurality of light-emitting regions AB. Eachmagenta filter 50M is disposed in the X-Y plane in a state of beingrotated by 45° with respect to the corresponding light-emitting regionAB. Put another way, each magenta filter 50M has a rectangular shapewith an outer side disposed diagonally with respect to the X1 directionor the Y2 direction. Each light-emitting region AB overlaps thecorresponding magenta filter 50M in plan view.

Further, in plan view, the yellow filter 50Y projects from thelight-emitting region AG toward each of the four adjacent light-emittingregions AR. Therefore, in plan view, the yellow filter 50Y overlaps onelight-emitting region AG and a portion of each of the fourlight-emitting regions AR. Note that the yellow filter 50Y does notoverlap the light-emitting region AB in plan view. Similarly, in planview, the magenta filter 50M projects from the light-emitting region ABtoward each of the four adjacent light-emitting regions AR. Therefore,in plan view, the magenta filter 50M overlaps one light-emitting regionAB and a portion of each of the four light-emitting regions AR. Notethat the magenta filter 50M does not overlap the light-emitting regionAG in plan view.

Accordingly, in plan view, the light-emitting region AR includes aportion overlapping the yellow filter 50Y and a portion overlapping themagenta filter 50M. In this exemplary embodiment, a portion of each ofthe two yellow filters 50Y and a portion of each of the two magentafilters 50M are disposed in a well-balanced manner on the light-emittingregion AR. Further, a contact point 5P where the two yellow filters 50Yand the two magenta filters 50M come into contact with each other islocated at the light-emitting region AR.

FIG. 8 is a diagram for explaining characteristics of the yellow filter50Y. In FIG. 8, a light emission spectrum Sp of the light-emittingelement layer 2 and a transmission spectrum TY of the yellow filter 50Yare illustrated. The light emission spectrum Sp is a sum of spectra ofthe light-emitting elements 20 of the three colors.

As illustrated in FIG. 8, the yellow filter 50Y transmits light in thered wavelength region and light in the green wavelength region andabsorbs light in the blue wavelength region. That is, the yellow filter50Y has a low transmittance of light in the blue wavelength region withrespect to each transmittance of light in the red wavelength region andlight in the green wavelength region. The transmittance of light in theblue wavelength region of the yellow filter 50Y with respect to awavelength of a maximum transmittance of visible light transmittedthrough the yellow filter 50Y is preferably not greater than 50% andmore preferably not greater than 20%.

FIG. 9 is a diagram for explaining characteristics of the magenta filter50M. In FIG. 9, the light emission spectrum Sp of the light-emittingelement layer 2 illustrated in FIG. 3 and a transmission spectrum TM ofthe magenta filter 50M are illustrated.

As illustrated in FIG. 9, the magenta filter 50M transmits light in thered wavelength region and light in the blue wavelength region andabsorbs light in the green wavelength region. That is, the magentafilter 50M has a low transmittance of light in the green wavelengthregion with respect to each transmittance of light in the red wavelengthregion and light in the blue wavelength region. The transmittance oflight in the green wavelength region of the magenta filter 50M withrespect to a wavelength of a maximum transmittance of visible lighttransmitted through the magenta filter 50M is preferably not greaterthan 50% and more preferably not greater than 20%.

FIG. 10 is a diagram for explaining characteristics of the color filter5. In FIG. 10, for convenience of explanation, the transmission spectrumTY of the yellow filter 50Y and the transmission spectrum TM of themagenta filter 50M are simplified.

As illustrated in FIG. 10, by using the two types of filters of theyellow filter 50Y and the magenta filter 50M, the color filter 5 cantransmit light in the red, green, and blue wavelength regions.

FIG. 11 is a schematic view illustrating an electro-optical device 100 xincluding a color filter 5 x in the related art. “x” is added to thereference signs of elements associated with the electro-optical device100 x in the related art.

The color filter 5 x included in the electro-optical device 100 xincludes a filter corresponding to the light-emitting element 20 foreach sub-pixel P0. The color filter 5 x includes a filter 50 xR thatselectively transmits light in the red wavelength region, a filter 50 xGthat selectively transmits light in the green wavelength region, and afilter 50 xB that selectively transmits light in the blue wavelengthregion. Although a plan view is omitted, the filter 50 xR overlaps thelight-emitting element 20R in plan view, the filter 50 xG overlaps thelight-emitting element 20G in plan view, and the filter 50 xB overlapsthe light-emitting element 20B in plan view.

In the electro-optical device 100 x, light LR in the red wavelengthregion emitted from the light-emitting element 20R is transmittedthrough the filter 50 xR. Note that the light LR in the red wavelengthregion is absorbed by the filter 50 xG and the filter 50 xB adjacent tothe filter 50 xR. Furthermore, light LG in the green wavelength regionemitted from the light-emitting element 20G is transmitted through thefilter 50 xG. Note that, although not illustrated in detail, the lightLG in the green wavelength region is absorbed by the filter 50 xR andthe filter 50 xB adjacent to the filter 50 xG. Similarly, light LB inthe blue wavelength region emitted from the light-emitting element 20Bis transmitted through the filter 50 xB. Note that, although notillustrated in detail, the light LB in the blue wavelength region isabsorbed by the filter 50 xG and the filter 50 xR adjacent to the filter50 xB.

FIG. 12 is a schematic view illustrating an example of a case in whichthe electro-optical device 100 x of FIG. 11 is reduced in size. In orderto reduce the size of the electro-optical device 100 x in FIG. 11, asillustrated in FIG. 12, when a width W1 of the pixel P is reduced, awidth of each sub-pixel P0 is also reduced. Note that a distance DObetween the color filter 5 x and each light-emitting element 20 x isunchanged. As the width of the sub-pixel P0 decreases, a width of eachof the filters 50 x also decreases. As a result, a spread angle of lighttransmitted through the color filter 5 x decreases. Specifically, aspread angle of the light LR transmitted through the filter 50 xR, aspread angle of the light LG transmitted through the filter 50 xG, and aspread angle of the light LB transmitted through the filter 50 xBdecrease.

FIG. 13 is a schematic view illustrating the electro-optical device 100of the first exemplary embodiment. As illustrated in FIG. 13, the colorfilter 5 of this exemplary embodiment includes two types of filters, andthe filters are not disposed for each sub-pixel P0. Therefore, in theelectro-optical device 100, the number of types of filters included inthe color filter 5 is less than the number of types of thelight-emitting elements 20. Then, in the electro-optical device 100, theyellow filter 50Y overlaps the light-emitting element 20R and thelight-emitting element 20G in plan view, and the magenta filter 50Moverlaps the light-emitting element 20R and the light-emitting element20B in plan view.

As described above, the light LR in the red wavelength region emittedfrom the light-emitting element 20R is transmitted through the yellowfilter 50Y and the magenta filter 50M. Thus, the light LR is transmittedthrough the color filter 5 without being absorbed by the color filter 5.

Further, the light LG in the green wavelength region emitted from thelight-emitting element 20G is transmitted through the yellow filter 50Y.The light LB in the blue wavelength region emitted from thelight-emitting element 20B is transmitted through the magenta filter50M. As described above, the number of types of filters included in thecolor filter 5 is less than the number of types of light-emittingelements 20. Therefore, the width of each filter can be made larger thanthat in the related art. Thus, the width of the yellow filter 50Y can bemade large compared to the width of the filter 50 xR in the related art.As a result, the spread angle of the light LG transmitted through theyellow filter 50Y can be made greater than the spread angle of the lightLG transmitted through the filter 50 xG in the related art. Similarly,the width of the magenta filter 50M can be made large compared to thewidth of the filter 50 xB in the related art. As a result, the spreadangle of the light LB transmitted through the magenta filter 50M can bemade greater than the spread angle of the light LB transmitted throughthe filter 50 xB in the related art.

As described above, the light-emitting element layer 2 includes thelight-emitting element 20R that emits light in the red wavelengthregion, the light-emitting element 20G that emits light in the greenwavelength region, and the light-emitting element 20B that emits lightin the blue wavelength region. Further, the color filter 5 includes theyellow filter 50Y that transmits light in the red wavelength region andlight in the green wavelength region and absorbs light in the bluewavelength region, and the magenta filter 50M that transmits light inthe blue wavelength region and light in the red wavelength region andabsorbs light in the green wavelength region. With such a color filter 5including the two types of filters, light in the red, green, and bluewavelength regions can be transmitted as described above.

Further, with such two types of filters provided for the three types oflight-emitting elements 20, a planar area of each of the filters can bemade large compared to a case in which three types of filterscorresponding to each of the three types of light-emitting elements 20are provided. This makes it possible to suppress the absorbing of lightfrom each of the light-emitting elements 20 by the filter. Thus, thespread angle of light is suppressed from becoming smaller than that inthe related art. Therefore, even if the width of the sub-pixels P0decreases or the density of the sub-pixels P0 increases, it is possibleto suppress the possibility of deterioration in visual field anglecharacteristics. Further, the absorbing of the light from each of thelight-emitting elements 20 by the filter is suppressed, and thus anopening ratio of each of the sub-pixels P0 can be improved.

In particular, the color filter 5 includes the two types of filters thattransmit light in the red wavelength region. Thus, light in the redwavelength region is less likely to be absorbed by the filter comparedto light in the wavelength regions of other colors. For example, when anintensity of light in the red wavelength region is to be higher thanintensities of light in other wavelength regions in accordance with adesired color balance, a difference in the intensities of light in eachwavelength region can be suppressed by using two types of filters thattransmit light in the red wavelength region. Furthermore, in thelight-emitting element layer 2, a total area of the light-emittingregion AR in each of the pixels P is largest. In this way, when a lightemission intensity of the light-emitting element 20R is to be highcompared to those of the other light-emitting elements 20, for example,the difference in the intensity of light in each wavelength region canbe suppressed over a long period.

Further, as described above, the light-emitting region AG overlaps theyellow filter 50Y in plan view. Therefore, the light from thelight-emitting region AG can be efficiently made incident on the yellowfilter 50Y compared to a case in which the yellow filter 50Y is disposedoffset with respect to the light-emitting region AG in plan view.Similarly, the light-emitting region AB overlaps the magenta filter 50Min plan view. Therefore, the light from the light-emitting region AB canbe efficiently made incident on the magenta filter 50M compared to acase in which the magenta filter 50M is disposed offset with respect tothe light-emitting region AB in plan view. Further, the light-emittingregion AR overlaps both the yellow filter 50Y and the magenta filter 50Min plan view. Therefore, the light from the light-emitting region AR canbe efficiently made incident on the yellow filter 50Y and the magentafilter 50M compared to a case in which the yellow filter 50Y and themagenta filter 50M are disposed offset with respect to thelight-emitting region AR in plan view. Accordingly, the electro-opticaldevice 100 that is bright and has a wide visual field angle can berealized.

Furthermore, as illustrated in FIG. 7, the array of the light-emittingregions A is a Bayer array, and each of the light-emitting regions ARoverlaps both the yellow filter 50Y and the magenta filter 50M in planview. Therefore, in one pixel P, the yellow filter 50Y and the magentafilter 50M are disposed side by side in the β2 direction intersectingthe α1 direction in which the two light-emitting regions AR are aligned.Put another way, the color filter 5 is disposed with respect to thelight-emitting element layer 2 so that the array direction of theplurality of pixels P and the array direction of the plurality of yellowfilters 50Y and the plurality of magenta filters 50M intersect.Therefore, in this exemplary embodiment, in each of the pixels P, twofilters are disposed with respect to the four light-emitting regions Aarranged in two rows and two columns. Thus, compared to a case in whichfour filters are provided in a one-to-one manner with the fourlight-emitting regions A included in each of the pixels P, an increasein the total number of the yellow filters 50Y and the magenta filters50M can be suppressed. Therefore, the yellow filters 50Y and the magentafilters 50M can be efficiently disposed.

Specifically, as illustrated in FIG. 7, the yellow filter 50Y located atthe light-emitting region AG is disposed projecting from thelight-emitting region AG to the four adjacent light-emitting regions ARin plan view. Similarly, the magenta filter 50C located at thelight-emitting region AB is disposed projecting from the light-emittingregion AB to the four adjacent light-emitting regions AR in plan view.Thus, a portion of the yellow filter 50Y and a portion of the magentafilter 50M overlap the light-emitting region AR in plan view.

Therefore, light in the green wavelength region from the light-emittingregion AG spreads from the light-emitting region AG onto the fouradjacent light-emitting regions AR and is transmitted through the yellowfilter 50Y. Similarly, light in the blue wavelength region from thelight-emitting region AB spreads from the light-emitting region AB ontothe four adjacent light-emitting regions AR and is transmitted throughthe magenta filter 50M. Furthermore, light in the red wavelength regionfrom the light-emitting region AR is transmitted through the yellowfilter 50Y and the magenta filter 50M. Therefore, light in the redwavelength region from the light-emitting region AR is transmittedthrough the color filter 5 without being absorbed by the filter.

Accordingly, according to the electro-optical device 100, light emittedfrom the light-emitting region A spreads in the X1, X2, Y1, and Y2directions from the light-emitting region A and is transmitted throughthe color filter 5. Therefore, even if the width of the sub-pixels P0decreases or the density of the sub-pixels P0 increases, it is possibleto effectively suppress deterioration in visual field anglecharacteristics.

Further, with the array of the light-emitting elements 20 being a Bayerarray, the three types of light-emitting elements 20 are disposed in tworows and two columns in each of the pixels P. Therefore, for example,the visual field angle characteristics can be improved compared to astripe array in which three types of light-emitting elements 20 arealigned in three row and one column, and a rectangle array describedlater. In particular, with the array being a Bayer array, the differencein visual field angle characteristics in the X1, X2, Y1, and Y2directions can be reduced due to the combination of the sub-pixels P0adjacent to one another. Thus, by using the light-emitting element layer2 in which the array of the light-emitting elements 20 is a Bayer arrayand the color filter 5, it is possible to suppress deterioration invisual field angle characteristics in various directions.

Further, as described above, the light-emitting element 20R, thelight-emitting element 20G, and the light-emitting element 20B havemutually different optical resonance structures 29. The light-emittingelement 20R has the optical resonance structure 29R that intensifieslight in the red wavelength region, the light-emitting element 20G hasthe optical resonance structure 29G that intensifies light in the greenwavelength region, and the light-emitting element 20B has the opticalresonance structure 29B that intensifies light in the blue wavelengthregion. By providing the optical resonance structure 29, it is possibleto intensify the light and narrow the spectrum of light. With use of thecolor filter 5 with the light-emitting element 20 having such an opticalresonance structure 29, it is possible to enhance color purity andvisual field angle characteristics.

1B. Second Exemplary Embodiment

A second exemplary embodiment will be described. Note that, for elementshaving the same functions as those of the first exemplary embodiment ineach of the following examples, the reference signs used in thedescription of the first exemplary embodiment will be used and detaileddescription thereof will be omitted as appropriate.

FIG. 14 is a schematic plan view illustrating a portion of a colorfilter 5A in the second exemplary embodiment. The second exemplaryembodiment is the same as the first exemplary embodiment except that thecolor filter 5A is different from the color filter 5 of the firstexemplary embodiment. Hereinafter, items of the color filter 5Adifferent from those of the color filter 5 of the first exemplaryembodiment will be described, and description of the same items will beomitted.

The plurality of yellow filters 50Y and the plurality of magenta filters50M included in the color filter 5A illustrated in FIG. 14 are arrangedalternately in a stripe pattern. In the color filter 5A, two types oflong filters of different colors are arranged alternately. In theillustrated example, the yellow filter 50Y and the magenta filter 50Meach have a long shape in plan view extending in the Y2 direction.

FIG. 15 is a schematic plan view illustrating an arrangement of thelight-emitting element layer 2 and the color filter 5A in the secondexemplary embodiment. As illustrated in FIG. 15, the plurality of yellowfilters 50Y and the plurality of magenta filters 50M are arrangedalternately in the X1 direction corresponding to the row direction ofthe plurality of light-emitting regions A. The yellow filters 50Y aredisposed in odd number columns of the light-emitting regions A, and themagenta filters 50M are disposed in even number columns of thelight-emitting regions A. Note that the column of the light-emittingregions A existing farthest in the X2 direction is a first column.

Each of the yellow filters 50Y overlaps all of the light-emittingregions A existing in the corresponding column in plan view. In theexample illustrated in FIG. 15, each of the yellow filters 50Y overlapsthree light-emitting regions AG and three light-emitting regions ARalternately arranged in the Y2 direction in plan view. Similarly, eachof the magenta filters 50M overlaps all of the light-emitting regions Aexisting in the corresponding column in plan view. In the exampleillustrated in FIG. 15, each of the magenta filters 50M overlaps threelight-emitting regions AB and three light-emitting regions ARalternately arranged in the Y2 direction in plan view. Further, in FIG.15, respective widths of the yellow filter 50Y and the magenta filter50M are slightly larger than a width of the light-emitting region A, butmay be equal. Note that the width is a length in the X1 direction.

Put another way, two types of filters, one yellow filter 50Y and onemagenta filter 50M, are disposed in each pixel P. In each pixel P, thelight-emitting region AG overlaps the yellow filter 50Y in plan view.The light-emitting region AB overlaps the magenta filter 50M in planview. The light-emitting region AR positioned in the Y2 direction withrespect to the light-emitting region AG overlaps the yellow filter 50Yin plan view. The light-emitting region AR positioned in the X1direction with respect to the light-emitting region AG overlaps themagenta filter 50M in plan view. In this exemplary embodiment, of thetwo light-emitting elements 20R provided in each pixel P, thelight-emitting region AR positioned in the Y2 direction with respect tothe light-emitting region AG corresponds to the “first light-emittingelement”, and the light-emitting region AR positioned in the X1direction with respect to the light-emitting region AG corresponds tothe “fourth light-emitting element”.

With use of the color filter 5A described above, similar to the firstexemplary embodiment, deterioration in the visual field anglecharacteristics and a decrease in the opening ratio can be suppressedeven if the width of the sub-pixels P0 decreases or the density of thesub-pixels P0 increases.

Furthermore, as illustrated in FIG. 14, in this exemplary embodiment,the array of the light-emitting regions A is a Bayer array, one of thelight-emitting regions AR overlaps the yellow filter 50Y in plan view,and the other light-emitting region AR overlaps the magenta filter 50M.Therefore, the yellow filter 50Y and the magenta filter 50M are disposedin a stripe pattern. Thus, the total number of the yellow filters 50Yand the magenta filters 50M can be further reduced, and the yellowfilters 50Y and the magenta filters 50M can be more efficientlydisposed, than in the first exemplary embodiment.

As described above, in plan view, each of the yellow filters 50Y has along shape extending in the Y2 direction and overlaps the plurality oflight-emitting regions AR and the plurality of light-emitting regions AGaligned in the Y2 direction. Therefore, light in the green wavelengthregion from the light-emitting region AG spreads not only directly abovethe light-emitting region AG but also in the Y1 direction and the Y2direction from the light-emitting region AG and is transmitted throughthe yellow filter 50Y. Further, in plan view, each of the magentafilters 50M has a long shape extending in the Y2 direction and overlapsthe plurality of light-emitting regions AR and the plurality oflight-emitting regions AB aligned in the Y2 direction. Therefore, lightin the blue wavelength region from the light-emitting region AB spreadsnot only directly above the light-emitting region AB but also in the Y1direction and the Y2 direction from the light-emitting region AB and istransmitted through the magenta filter 50M. Furthermore, light in thered wavelength region from the light-emitting region AR is transmittedthrough the color filter 5A without being absorbed by the filter.

Accordingly, in this exemplary embodiment as well, similar to the firstexemplary embodiment, light from the light-emitting element 20 isabsorbed by the filter as in the related art, thereby suppressing adecrease in the spread angle of the light. In particular, by using thecolor filter 5A when the array of the light-emitting regions A is aBayer array, it is possible to widen the visual field angles of light inthe green and blue wavelength regions in the Y1 direction and the Y2direction. Thus, the electro-optical device 100 of this exemplaryembodiment is effective for use in devices that particularly requirevisual field angle characteristics in the Y1 direction and the Y2direction. It is desirable to select an optimum form in accordance withintended use.

The light-emitting element layer 2 and the color filter 5A of the secondexemplary embodiment described above can also, similar to the firstexemplary embodiment, improve visual field angle characteristics.

1C: Third Exemplary Embodiment

A third exemplary embodiment will be described. Note that, for elementshaving the same functions as those of the first exemplary embodiment ineach of the following examples, the reference signs used in thedescription of the first exemplary embodiment will be used and detaileddescription thereof will be omitted as appropriate.

FIG. 16 is a schematic plan view illustrating a portion of a colorfilter 5B in the third exemplary embodiment. The third exemplaryembodiment is the same as the first exemplary embodiment except that thecolor filter 5B is different from the color filter 5 of the firstexemplary embodiment. Hereinafter, items of the color filter 5B thatdiffer from those of the color filter 5 of the first exemplaryembodiment will be described, and description of the same items will beomitted.

The plurality of yellow filters 50Y and the plurality of magenta filters50M included in the color filter 5B illustrated in FIG. 16 are arrangedalternately in a stripe pattern. In the color filter 5B, two types oflong filters of different colors are arranged alternately. In theillustrated example, the yellow filter 50Y and the magenta filter 50Meach have a long shape in plan view extending in the X1 direction. Notethat the direction in which the color filter 5B of this exemplaryembodiment is aligned is different from the direction in which the colorfilter 5 of the second exemplary embodiment is aligned.

FIG. 17 is a schematic plan view illustrating an arrangement of thelight-emitting element layer 2 and the color filter 5B in the thirdexemplary embodiment. As illustrated in FIG. 17, the plurality of yellowfilters 50Y and the plurality of magenta filters 50M are arrangedalternately in the Y2 direction corresponding to the column direction ofthe plurality of light-emitting regions A. The yellow filters 50Y aredisposed in odd number rows of the light-emitting regions A, and themagenta filters 50M are disposed in even number rows of thelight-emitting regions A. Note that the row of the light-emittingregions A existing farthest in the Y1 direction is a first row.

Each of the yellow filters 50Y overlaps all of the light-emittingregions A existing in the corresponding row in plan view. In the exampleillustrated in FIG. 17, each of the yellow filters 50Y overlaps threelight-emitting regions AR and three light-emitting regions AGalternately arranged in the X1 direction in plan view. Similarly, eachof the magenta filters 50M overlaps all of the light-emitting regions Aexisting in the corresponding row in plan view. In the exampleillustrated in FIG. 17, each of the magenta filters 50M overlaps threelight-emitting regions AR and three light-emitting regions ABalternately arranged in the X1 direction in plan view. Further, in FIG.17, the respective widths of the yellow filter 50Y and the magentafilter 50M are slightly larger than the width of the light-emittingregion A, but may be equal. Note that the width is a length in the Y1direction.

Put another way, two types of filters, one yellow filter 50Y and onemagenta filter 50M, are disposed in each pixel P. In each pixel P, thelight-emitting region AG overlaps the yellow filter 50Y in plan view.The light-emitting region AB overlaps the magenta filter 50M in planview. The light-emitting region AR positioned in the X1 direction withrespect to the light-emitting region AG overlaps the yellow filter 50Yin plan view. The light-emitting region AR positioned in the Y2direction with respect to the light-emitting region AG overlaps themagenta filter 50M in plan view. In this exemplary embodiment, of thetwo light-emitting elements 20R provided in each pixel P, thelight-emitting region AR positioned in the X1 direction with respect tothe light-emitting region AG corresponds to the “first light-emittingelement”, and the light-emitting region AR positioned in the Y2direction with respect to the light-emitting region AG corresponds tothe “fourth light-emitting element”.

With use of the color filter 5B described above, similar to the firstexemplary embodiment, deterioration in the visual field anglecharacteristics and a decrease in the opening ratio can be suppressedeven if the width of the sub-pixels P0 decrease or the density of thesub-pixels P0 increases.

Furthermore, as illustrated in FIG. 17, in this exemplary embodiment,the array of the light-emitting regions A is a Bayer array, one of thelight-emitting regions AR overlaps the yellow filter 50Y in plan view,and the other light-emitting region AR overlaps the magenta filter 50M.Therefore, the yellow filter 50Y and the magenta filter 50M are disposedin a stripe pattern. Thus, the total number of the yellow filters 50Yand the magenta filters 50M can be further reduced, and the yellowfilters 50Y and the magenta filters 50M can be more efficientlydisposed, than in the first exemplary embodiment.

In plan view, each of the yellow filters 50Y has a long shape extendingin the X1 direction and overlaps the plurality of light-emitting regionsAR and the plurality of light-emitting regions AG aligned in the X1direction. Therefore, light in the green wavelength region from thelight-emitting region AG spreads not only directly above thelight-emitting region AG but also in the X1 direction and the X2direction from the light-emitting region AG and is transmitted throughthe yellow filter 50Y. Further, in plan view, each of the magentafilters 50M has a long shape extending in the X1 direction and overlapsthe plurality of light-emitting regions AR and the plurality oflight-emitting regions AB aligned in the X1 direction. Therefore, lightin the blue wavelength region from the light-emitting region AB spreadsnot only directly above the light-emitting region AB but also in the X1direction and the X2 direction from the light-emitting region AB and istransmitted through the magenta filter 50M. Furthermore, light in thered wavelength region from the light-emitting region AR is transmittedthrough the color filter 5B without being absorbed by the filter.

Accordingly, in this exemplary embodiment as well, similar to the firstexemplary embodiment, light from the light-emitting element 20 isabsorbed by the filter as in the related art, thereby suppressing adecrease in the spread angle of the light. In particular, by using thecolor filter 5B when the array of the light-emitting regions A is aBayer array, it is possible to widen the visual field angles of light inthe green and blue wavelength regions in the X1 direction and the X2direction. Thus, the electro-optical device 100 of this exemplaryembodiment is effective for use in devices that particularly requirevisual field angle characteristics in the X1 direction and the X2direction. It is desirable to select an optimum form in accordance withintended use.

The light-emitting element layer 2 and the color filter 5B of the thirdexemplary embodiment described above can also, similar to the firstexemplary embodiment, improve the visual field angle characteristics.

1D. Fourth Exemplary Embodiment

A fourth exemplary embodiment will be described. Note that, for elementshaving the same functions as those of the third exemplary embodiment ineach of the following examples, the reference signs used in thedescription of the third exemplary embodiment will be used and detaileddescription thereof will be omitted as appropriate.

FIG. 18 is a schematic plan view illustrating a portion of alight-emitting element layer 2C of a fourth exemplary embodiment. Thefourth exemplary embodiment is the same as the third exemplaryembodiment except that the light-emitting element layer 2C is differentfrom the light-emitting element layer 2 of the first exemplaryembodiment. Hereinafter, items of the light-emitting element 2C thatdiffer from those of the light-emitting element 2 of the third exemplaryembodiment will be described, and description of the same items will beomitted.

Note that in this exemplary embodiment, although not illustrated, thearray of the sub-pixels P0 is a rectangle array. The rectangle array isan array in which one sub-pixel PR, one sub-pixel PG, and one sub-pixelPB form a single pixel P, and differs from a stripe array. The directionin which the three sub-pixels P0 in the rectangle array are aligned isnot one direction.

As illustrated in FIG. 18, the light-emitting element layer 2C includesone light-emitting element 20R, one light-emitting element 20G, and onelight-emitting element 20B for each pixel P. The array of thelight-emitting regions A is a rectangle array. Thus, one light-emittingregion AR, one light-emitting region AG, and one light-emitting regionAB constitute one set. Furthermore, the direction in which thelight-emitting region AG and the light-emitting region AB are aligneddiffers from the direction in which the light-emitting region AG and thelight-emitting region AR are aligned and the direction in which thelight-emitting region AB and the light-emitting region AR are aligned.The direction in which the light-emitting region AG and thelight-emitting region AR are aligned and the direction in which thelight-emitting region AB and the light-emitting region AR are alignedare the same, and in the illustrated example, the direction is the X1direction. The direction in which the light-emitting region AG and thelight-emitting region AB are aligned is the Y2 direction.

Further, in the rectangle array of this exemplary embodiment, the areaof the light-emitting region AR of the three light-emitting regions A islargest. The light-emitting region AR is rectangular, and each of thelight-emitting region AG and the light-emitting region AB is square. Inthe Y2 direction, the light-emitting region AR is wider than thelight-emitting regions AG, AB. Note that the areas of the light-emittingregions AG, AB in plan view are equal to each other, but may bedifferent from each other. Further, the plurality of light-emittingregions AG and the plurality of light-emitting regions AB are aligned inthe Y2 direction. Similarly, the plurality of light-emitting regions ARare aligned in the Y2 direction. The columns in which the plurality oflight-emitting regions AG and the plurality of light-emitting regions ABare aligned and the columns in which the plurality of light-emittingregions AR are aligned are alternately disposed in the X1 direction.Further, one light-emitting region AR, one light-emitting region AG, andone light-emitting region AB of each pixel P in this exemplaryembodiment are considered to fall within two rows and two columns of thesub-pixel P0 of the first exemplary embodiment. In each pixel P, thearea of the light-emitting region AR in plan view of this exemplaryembodiment is greater than or equal to a total area of the twolight-emitting regions AR in plan view of the first exemplaryembodiment.

FIG. 19 is a schematic plan view illustrating an arrangement of thelight-emitting element layer 2C and the color filter 5B in the fourthexemplary embodiment. As illustrated in FIG. 19, the light-emittingregion AG overlaps the yellow filter 50Y in plan view. Thelight-emitting region AB overlaps the magenta filter 50M in plan view.In plan view, the light-emitting region AR includes a portionoverlapping the yellow filter 50Y and a portion overlapping the magentafilter 50M. Thus, the light-emitting region AR overlaps both the yellowfilter 50Y and the magenta filter 50M.

In this exemplary embodiment as well, similar to the third exemplaryembodiment, light in the green wavelength region from the light-emittingregion AG spreads from the light-emitting region AG in the X1 directionand the X2 direction and is transmitted through the yellow filter 50Y.Further, light in the blue wavelength region from the light-emittingregion AB spreads from the light-emitting region AB in the X1 directionand the X2 direction and is transmitted through the magenta filter 50M.Furthermore, light in the red wavelength region from the light-emittingregion AR is transmitted through the color filter 5B without beingabsorbed by the filter.

Accordingly, similar to the third exemplary embodiment, by using thelight-emitting element layer 2C and the color filter 5B, it is possibleto suppress the absorbing of light from the light-emitting elements 20by the filter. This makes it possible to improve the opening ratio foreach sub-pixel P0 and improve the visual field angle characteristics.

Further, in this exemplary embodiment, as described above, the array ofthe light-emitting regions AR, AG, AB is a rectangle array, and a planararea of the light-emitting region AR is largest. Then, the plurality ofyellow filters 50Y and the plurality of magenta filters 50M are arrangedin a stripe pattern in the direction in which the light-emitting regionAG and the light-emitting region AB are aligned. When the light-emittingregions A are a rectangle array, the plurality of yellow filters 50Y andthe plurality of magenta filters 50M are disposed in a stripe pattern,and thus a filter need not be provided for each of the three types ofsub-pixels P0. Therefore, the yellow filters 50Y and the magenta filters50M can be efficiently disposed. Thus, the spread angle of the light ofeach color can be increased. Further, with the two types of filtersdisposed in a stripe pattern, each filter and the light-emitting elementlayer 2C can be brought into close contact over a wider area compared toa case in which a filter is disposed for each of the three types ofsub-pixels P0. This facilitates design and manufacture.

Further, as described above, in the Bayer array of the first exemplaryembodiment, four of the light-emitting elements 20 are provided for eachof the pixels P. In contrast, in the rectangle array, three of thelight-emitting elements 20 are provided for each of the pixels P. Thus,with the rectangle array, the number of light-emitting elements 20 canbe reduced compared to a case in which the array is a Bayer array.Therefore, the planar area of the light-emitting region AR can beincreased. Thus, the opening ratio of the light-emitting region AR canbe improved.

The light-emitting element layer 2C and the color filter 5B of thefourth exemplary embodiment described above can also, similar to thethird exemplary embodiment, improve the visual field anglecharacteristics.

1E. Modification Example

Each of the exemplary embodiments exemplified in the above can bevariously modified. Specific modification aspects applied to each of theembodiments described above are exemplified below. Two or more modesfreely selected from exemplifications below can be appropriately used incombination as long as mutual contradiction does not arise.

While, in each exemplary embodiment, the light-emitting element 20 hasthe optical resonance structure 29 having a different resonancewavelength for each color, the light-emitting element need not have theoptical resonance structure 29. Further, the light-emitting elementlayer 2 may, for example, include a partition wall configured topartition the organic layer 24 for each of the light-emitting elements20. Further, the light-emitting element 20 may include differentlight-emitting materials for each of the sub-pixels P0. Further, thepixel electrode 23 may have light reflectivity. In this case, thereflection layer 21 may be omitted. Further, although the commonelectrode 25 is common to the plurality of light-emitting elements 20,an individual cathode may be provided for each of the light-emittingelements 20.

In the first exemplary embodiment, the filters of the color filter 5 aredisposed in contact with each other, but a so-called black matrix may beinterposed between the filters of the color filter 5. Further, thefilters of the color filter 5 may include portions that overlap eachother. Note that the same applies to other exemplary embodiments.

The array of the light-emitting regions A is not limited to a Bayerarray and a rectangle array, and may be, for example, a delta array or astripe array.

The “electro-optical device” is not limited to an organic EL device, andmay be an inorganic EL device that uses an inorganic material or aμ-light-emitting diode (LED) device.

The row direction and the column direction of the plurality of pixels Pmay intersect at less than 90° rather than being orthogonal to eachother. Similarly, the row direction and the column direction of theplurality of filters in the first exemplary embodiment may intersect atless than 90° rather than being orthogonal to each other.

2. Electronic Apparatus

The electro-optical device 100 of the exemplary embodiments describedabove is applicable to various electronic apparatuses.

2-1. Head-Mounted Display

FIG. 20 is a plan view schematically illustrating a portion of a virtualdisplay device 700 as an example of an electronic apparatus. The virtualdisplay apparatus 700 illustrated in FIG. 20 is a head-mounted display(HMD) mounted on a head of an observer and configured to display animage. The virtual display apparatus 700 includes the electro-opticaldevice 100 described above, a collimator 71, a light guide 72, a firstreflection-type volume hologram 73, a second reflection-type volumehologram 74, and a control unit 79. Note that light emitted from theelectro-optical device 100 is emitted as image light LL.

The control unit 79 includes a processor and a memory, for example, andcontrols the operation of the electro-optical device 100. The collimator71 is disposed between the electro-optical device 100 and the lightguide 72. The collimator 71 collimates light emitted from theelectro-optical device 100. The collimator 71 is constituted by acollimating lens or the like. The light collimated by the collimator 71is incident on the light guide 72.

The light guide 72 has a flat plate shape, and is disposed so as toextend in a direction intersecting a direction of light incident via thecollimator 71. The light guide 72 reflects and guides light therein. Alight incident port on which light is incident and a light emission portfrom which light is emitted are provided in a surface 721 of the lightguide 72 facing the collimator 71. The first reflection-type volumehologram 73 as a diffractive optical element and the secondreflection-type volume hologram 74 as a diffractive optical element aredisposed on a surface 722 of the light guide 72 opposite to the surface721. The second reflection-type volume hologram 74 is provided closer tothe light emission port side than the first reflection-type volumehologram 73. The first reflection-type volume hologram 73 and the secondreflection-type volume hologram 74 have interference fringescorresponding to a predetermined wavelength region, and diffract andreflect light in the predetermined wavelength region.

In the virtual display apparatus 700 having such a configuration, theimage light LL incident on the light guide 72 from the light incidentport travels while being repeatedly reflected, and is guided to an eyeEY of an observer from a light emission port, and thus the observer canobserve an image constituted by a virtual image formed by the imagelight LL.

The virtual display apparatus 700 includes the electro-optical device100 described above. The electro-optical device 100 described above hasexcellent visual field angle characteristics and good quality.Therefore, a virtual display apparatus 700 having high display qualitycan be provided by including the electro-optical device 100.

2-2. Personal Computer

FIG. 21 is a perspective view illustrating a personal computer 400 as anexample of the electronic apparatus in the present disclosure. Thepersonal computer 400 illustrated in FIG. 21 includes theelectro-optical device 100, a main body 403 provided with a power switch401 and a keyboard 402, and a control unit 409. The control unit 409includes a processor and a memory, for example, and controls theoperation of the electro-optical device 100. The electro-optical device100 has superior viewing angle characteristics and has good quality.Therefore, the personal computer 400 having high display quality can beprovided by including the electro-optical device 100.

Note that examples of the “electronic apparatus” including theelectro-optical device 100 include, in addition to the virtual displayapparatus 700 illustrated in FIG. 20 and the personal computer 400illustrated in FIG. 21, an apparatus disposed close to eyes such as adigital scope, a digital binocular, a digital still camera, and a videocamera. Further, the “electronic apparatus” including theelectro-optical device 100 is applied as a mobile phone, a smartphone, apersonal digital assistant (PDA), a car navigation device, and avehicle-mounted display unit. Furthermore, the “electronic apparatus”including the electro-optical device 100 is applied as illumination forilluminating light.

The present disclosure was described above based on the illustratedexemplary embodiments. However, the present disclosure is not limitedthereto. In addition, the configuration of each component of the presentdisclosure may be replaced with any configuration that exerts theequivalent functions of the above-described exemplary embodiments, andto which any configuration may be added. Further, any configuration maybe combined with each other in the above-described exemplary embodimentsof the present disclosure.

1. An electro-optical device, comprising: a first light-emitting element configured to emit light in a first wavelength region; a second light-emitting element configured to emit light in a second wavelength region shorter than the first wavelength region; a third light-emitting element configured to emit light in a third wavelength region shorter than the second wavelength region; a first filter configured to transmit light in the first wavelength region and light in the second wavelength region and absorb light in the third wavelength region; and a second filter configured to transmit light in the first wavelength region and light in the third wavelength region and absorb light in the second wavelength region.
 2. The electro-optical device according to claim 1, wherein the second light-emitting element overlaps the first filter in a plan view, the third light-emitting element overlaps the second filter in the plan view, and the first light-emitting element overlaps one or both of the first filter and the second filter in the plan view.
 3. The electro-optical device according to claim 2, comprising: a fourth light-emitting element configured to emit light in the first wavelength region, wherein an array of the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element is a Bayer array, and each of the first light-emitting element and the fourth light-emitting element includes a portion overlapping the first filter and a portion overlapping the second filter in the plan view.
 4. The electro-optical device according to claim 2, comprising: a fourth light-emitting element configured to emit light in the first wavelength region, wherein an array of the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element is a Bayer array, the first light-emitting element overlaps the first filter in the plan view, and the fourth light-emitting element overlaps the second filter in the plan view.
 5. The electro-optical device according to claim 2, wherein an array of the first light-emitting element, the second light-emitting element, and the third light-emitting element is a Rectangle array, and the first filter and the second filter are aligned in a direction in which the second light-emitting element and the third light-emitting element are aligned.
 6. The electro-optical device according to claim 1, wherein the first light-emitting element, the second light-emitting element, and the third light-emitting element have optical resonance structures that differ from one another.
 7. An electronic apparatus comprising: the electro-optical device according to claim 1; and a control unit configured to control operation of the electro-optical device. 